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Core Loss Analysis of Interior Permanent Magnet Synchronous Machines under SVPWM Excitation with Considering Saturation

Author

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  • Yanli Feng

    (National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Haidian District, Beijing 100081, China)

  • Chengning Zhang

    (National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, No. 5 South Zhongguancun Street, Haidian District, Beijing 100081, China)

Abstract

Core loss is one of the significant factors affecting the high power density of permanent magnet machines; thus, it is necessary to consider core loss in machine design. This paper presents a novel method for calculating the core loss of permanent magnet synchronous machines under space vector pulse width modulation (SVPWM) excitation, taking magnetic saturation and cross coupling into account. In order to accurately obtain the direct and quadrature (d-q) axis, current in the given load condition, the permanent magnet motor model under SVPWM excitation has been modified, so as to consider the influence of magnetic saturation and cross coupling effects on the d -q axis flux-linkage. Based on the magnetic field distribution caused by permanent magnet and armature reactions, the stator core loss can be calculated with the core loss analytical model, corresponding to the rotational magnetic field. In this study, the method has been applied to analyze core loss in an interior permanent magnet synchronous machine, and has been validated by the experimental results. The influence of pole/slot number combinations on core loss in the same on-load condition is also investigated. This study provides a potential method to guide motor design optimization.

Suggested Citation

  • Yanli Feng & Chengning Zhang, 2017. "Core Loss Analysis of Interior Permanent Magnet Synchronous Machines under SVPWM Excitation with Considering Saturation," Energies, MDPI, vol. 10(11), pages 1-19, October.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:11:p:1716-:d:116460
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    References listed on IDEAS

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    1. Zhen Tian & Chengning Zhang & Shuo Zhang, 2017. "Analytical Calculation of Magnetic Field Distribution and Stator Iron Losses for Surface-Mounted Permanent Magnet Synchronous Machines," Energies, MDPI, vol. 10(3), pages 1-12, March.
    2. Xing Liu & Jinhua Du & Deliang Liang, 2016. "Analysis and Speed Ripple Mitigation of a Space Vector Pulse Width Modulation-Based Permanent Magnet Synchronous Motor with a Particle Swarm Optimization Algorithm," Energies, MDPI, vol. 9(11), pages 1-15, November.
    3. Yang Xiao & Libing Zhou & Jin Wang & Rui Yang, 2017. "Finite Element Computation of Transient Parameters of a Salient-Pole Synchronous Machine," Energies, MDPI, vol. 10(7), pages 1-18, July.
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    Cited by:

    1. Xin Ba & Zhenjie Gong & Youguang Guo & Chengning Zhang & Jianguo Zhu, 2022. "Development of Equivalent Circuit Models of Permanent Magnet Synchronous Motors Considering Core Loss," Energies, MDPI, vol. 15(6), pages 1-18, March.
    2. Marcin Wardach & Piotr Paplicki & Ryszard Palka, 2018. "A Hybrid Excited Machine with Flux Barriers and Magnetic Bridges," Energies, MDPI, vol. 11(3), pages 1-8, March.

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